<?php
header("Content-type:text/html;charset=utf-8");
require_once 'db_conn.php';
$conn;

$sql = "SELECT * FROM t_message";
$result = $conn->query($sql);


echo "pre";
//print_r($result->fetch_assoc());
$rows = $result->fetch_all(MYSQLI_ASSOC);
print_r($rows);
foreach($rows as $value){
    echo "<br/>";
    echo $value['username'] ." 说： ".$value["content"];
}
